*Underperforming UK Logistics business non-core. *Bidcorp wants to scale down in UK Logistics. JOHANNESBURG, Feb 21- Bid Corporation Ltd, an international food distributor, is considering an offer for its UK transport business as it looks to focus on its core operations.

DUBAI, Jan 21- Gulf stock markets mostly edged down on Sunday with Saudi Arabia pulling further away from a major resistance level, although a surge by fuel distributor ADNOC Distribution buoyed Abu Dhabi. Dairy company Almarai dropped 1.9 percent after reporting fourth-quarter net profit of 513 million riyals, down from 536 million riyals a year ago and below...